飞行器红灯快闪3秒，在5秒后紫灯单闪，掰杆无法起飞，原因是（）。
A.IMU异常
B.指南针异常
C.处在禁飞区
D.电池未识别
参考答案：C
Only ______ as a translator ______ how important it was to grasp English.
A．when did I work; I realized
B．when did I work; did I realize
C．when I worked; I realized
D．when I worked; did I realize
关于医师行使权利的提法是
A．行使权利的自主性
B．行使权利的权威性
C．行使权利的特殊性
D．可以行使特殊干涉权
